India’s BRSR Core: The Mandatory Sustainability Disclosure Framework That Is Quietly Building India’s Industrial GHG Data Infrastructure
BRSR Core is mandatory for India’s top 1,000 listed companies from FY2024-25 — requiring reasonable assurance on nine KPIs including verified Scope 1 and Scope 2 GHG emissions, energy intensity, and selected Scope 3. For industrial companies also under CCTS, the two frameworks produce essentially the same GHG data. Companies that build integrated BRSR-CCTS reporting infrastructure are building their CBAM documentation capability simultaneously.
Key Takeaways
- The Business Responsibility and Sustainability Report (BRSR) was introduced by SEBI in 2021 as a replacement for the Business Responsibility Report. The BRSR Core — a more demanding sub-set of BRSR — was introduced in 2023, requiring assured (third-party verified) disclosure of nine Key Performance Indicators for top-listed companies. The nine Core KPIs cover GHG emissions (Scope 1, Scope 2, and selected Scope 3), energy consumption and intensity, water consumption and intensity, waste generation, turnover linked to sustainability, pay parity, job creation, and spending on R&D for sustainability. BRSR Core was mandatory for the top 150 companies by market capitalisation from FY2023-24 and extended to the top 1,000 from FY2024-25.
- The GHG KPIs in BRSR Core require disclosure of total Scope 1 GHG emissions, total Scope 2 GHG emissions (both location-based using national average grid emission factor and market-based using the emission factor of contracted electricity source), GHG emission intensity per unit of revenue, and selected Scope 3 categories — specifically purchased goods and services (Category 1) and downstream transport and distribution (Category 9) for applicable sectors. This Scope 3 requirement, while limited to two categories, is the first mandatory Scope 3 disclosure obligation for Indian listed companies — and it directly anticipates the 2028 CBAM downstream expansion that will bring fabricated steel and aluminium products into CBAM scope.
- Reasonable assurance under BRSR Core is a higher verification standard than the limited assurance typically used for voluntary ESG disclosures. Reasonable assurance requires the assurance provider (a SEBI-registered firm, typically one of the Big Four or a specialist sustainability assurance firm) to obtain sufficient appropriate evidence to conclude with high confidence that the reported KPI data is free from material misstatement. This is operationally closer to a financial audit than to the limited assurance procedures used in most voluntary sustainability reports — and it imposes a significantly higher data quality, internal control, and documentation standard on the company’s GHG measurement systems.
- The overlap between BRSR Core GHG disclosure and CCTS MRV is substantial for CCTS obligated entities that are also in the top 1,000 listed companies. Both require Scope 1 and Scope 2 GHG data at the entity level. Both require third-party verification of that data. Both use the national grid emission factor (CEA WAEF) for electricity Scope 2 calculation. The primary differences are in boundary (BRSR Core is at the consolidated company level; CCTS is at the individual plant/facility level), verification standard (BRSR Core is reasonable assurance; CCTS uses ACVA limited assurance), and reporting entity (BRSR Core goes to SEBI via the Annual Report; CCTS goes to BEE via the ICM Registry). Companies that invest in plant-level CCTS MRV infrastructure simultaneously build the data foundation for company-level BRSR Core GHG disclosure — with modest additional aggregation and boundary adjustment work.
- The BRSR Core Scope 3 requirements — particularly Category 1 (purchased goods and services) which covers emissions embedded in a company’s supply chain inputs — directly anticipate the supply chain carbon disclosure demands that CBAM is placing on Indian industrial exporters’ European customers. A European auto manufacturer buying Indian steel must disclose its Scope 3 Category 11 (processing of sold products) emissions for the steel processing it sells to end consumers — requiring it to obtain the Scope 3 Category 1 embedded emission data from its Indian steel supplier. BRSR Core Category 1 disclosure from Indian steel and aluminium companies is the domestic data infrastructure that enables this international supply chain data chain. Companies that begin building Category 1 Scope 3 data now are preparing for EU supply chain due diligence requirements that will be mandatory under the EU Corporate Sustainability Due Diligence Directive (CSDDD) for Indian suppliers by 2027 to 2028.
- The penalty for BRSR Core non-compliance is SEBI’s standard enforcement action for listed company reporting violations — including adjudication proceedings, financial penalties, and in severe cases regulatory action on the company’s exchange listing. The financial penalties under SEBI’s adjudication process are not as immediately material as CCTS’s 2× CCC price penalty, but the reputational and governance consequences of a BRSR Core assurance qualification or non-disclosure can be significant for companies with institutional investors applying ESG screens to their portfolio holdings.
India’s BRSR Core is not well understood by industrial companies — it is frequently treated as a disclosure compliance exercise managed by the investor relations or sustainability team, disconnected from the operational data systems that produce GHG emission measurements at the plant level. This disconnect is a significant efficiency failure. BRSR Core’s GHG data requirements — Scope 1, Scope 2, and selected Scope 3, with reasonable assurance — are not fundamentally different from what a CCTS-obligated industrial company must produce for BEE’s ICM Registry. Both require the same underlying plant-level measurement of fuel consumption, process gas volumes, electricity consumption, and emission factors. Both require third-party verification of that data. The primary differences — in boundary scope (consolidated company versus individual plant), verification standard (reasonable assurance versus limited assurance), and recipient (SEBI via Annual Report versus BEE via ICM Registry) — are managerial rather than data infrastructure requirements.
Companies that build integrated BRSR-CCTS reporting infrastructure — a single plant-level GHG measurement system that produces data for both frameworks simultaneously — achieve economies of scale in their sustainability compliance operations that companies running two parallel, disconnected systems cannot. The integrated approach is also the foundation for CBAM documentation, green finance documentation, and EU supply chain disclosure compliance — all of which require essentially the same Scope 1 and Scope 2 GHG data at the facility level, verified by a third party. The sustainability compliance stack for large Indian industrial companies in 2026 is convergent around a common data requirement: verified, facility-level GHG emission intensity. Building that infrastructure once and using it across all frameworks is the dominant industrial compliance strategy for this decade.
BRSR Core vs CCTS MRV: where they overlap and where they diverge
BRSR Core vs CCTS MRV — Comparison for Industrial Companies
| Dimension | BRSR Core (SEBI) | CCTS MRV (BEE) | Integration Opportunity |
|---|---|---|---|
| GHG Scope | Scope 1, Scope 2 (location and market-based), Scope 3 Cat 1 and 9 | Scope 1 direct + Scope 2 grid electricity (gate-to-gate GEI) | ~85% data overlap — Scope 1 and Scope 2 data is common; Scope 3 is BRSR-additional |
| Reporting boundary | Consolidated company (all facilities in financial consolidation) | Individual plant or facility (each CCTS obligated unit separately) | CCTS plant data aggregates to BRSR company total — reconciliation needed but data is compatible |
| Verification standard | Reasonable assurance (higher — comparable to financial audit) | Limited assurance (ACVA third-party verification) | CCTS limited assurance meets BRSR disclosure minimum — upgrade to reasonable assurance adds cost but satisfies both |
| Verification frequency | Annual (end of financial year with Annual Report) | Annual (before June compliance deadline) | Both annual — single verification engagement with dual scope saves cost vs two separate engagements |
| Verified by | SEBI-registered sustainability assurance provider (typically Big Four or specialist firm) | BEE-accredited ACVA (approximately 50–60 agencies) | Some ACVAs are also SEBI-registered — single-provider engagement possible for companies in both frameworks |
| Primary recipient | SEBI via Annual Report and stock exchange disclosure; accessible by investors | BEE via ICM Registry; used for CCC issuance and compliance determination | Data goes to different recipients — one dataset, two reports |
| Intensity metric | GHG intensity per rupee of revenue (tCO₂e/Rs lakh) | GHG emission intensity per unit of physical output (tCO₂e/t of product) | CCTS physical intensity converts to revenue intensity if production revenue data is available — minor reconciliation |
The Scope 3 obligation that connects BRSR Core to CBAM downstream expansion. BRSR Core’s requirement for Scope 3 Category 1 disclosure — purchased goods and services embedded emissions — positions Indian industrial companies to provide the supply chain GHG data that their EU customers will increasingly require for their own Scope 3 reporting under ESRS (European Sustainability Reporting Standards). The EU’s CSDDD (Corporate Sustainability Due Diligence Directive), phasing in for large EU companies from 2025 to 2027, will require EU steel users, auto manufacturers, and construction companies to disclose and manage the Scope 3 emissions embedded in their supply chains. Indian suppliers that cannot provide verified Category 1 Scope 3 data will face progressive exclusion from EU supply chains — not through CBAM (which is an import levy, not a supply chain qualification standard) but through EU companies’ own sustainability reporting requirements. BRSR Core Category 1 disclosure is India’s domestic mechanism for building the data capability to satisfy this EU supply chain demand.
Frequently Asked Questions
What exactly are the nine BRSR Core KPIs that require reasonable assurance?
The nine BRSR Core KPIs are: total GHG emissions (Scope 1, 2, and select Scope 3); GHG intensity per unit of revenue; energy consumption and intensity; water withdrawal and consumption intensity; waste generated (by type and disposal method); percentage of turnover from products designed for circular economy or with sustainability credentials; total R&D and capex spending on sustainability; percentage of female employees; and pay parity ratio between highest and median salary. Of these nine, the GHG emissions, energy, water, and waste KPIs are the ones with the most significant data infrastructure implications for industrial companies — they require systematic measurement, internal control, and third-party verification comparable to financial reporting.
Does BRSR Core require Scope 3 emissions across all categories or only specific ones?
BRSR Core requires Scope 3 disclosure for Category 1 (purchased goods and services) and Category 9 (downstream transportation and distribution) for applicable sectors. It does not require all 15 Scope 3 categories. Category 1 is the most data-intensive Scope 3 category — it requires companies to estimate the GHG emissions embedded in all goods and services they purchase as inputs to their own production. For a steel company, this means the embedded emissions of iron ore, coking coal, limestone, and electricity-generating equipment. For an aluminium company, it means bauxite, alumina, and carbon anodes. The practical approach used by most companies in the first year of BRSR Core Scope 3 disclosure is a spend-based estimation using emission factors from published databases (EXIOBASE, IEA, US EPA) rather than primary data from individual suppliers — which is acceptable for initial disclosure but will progressively be replaced by supplier-specific primary data as the framework matures.
How does BRSR Core’s location-based vs market-based Scope 2 distinction relate to CBAM?
BRSR Core requires disclosure of both location-based Scope 2 (using the national average grid emission factor — the CEA WAEF of 0.710 tCO₂/MWh) and market-based Scope 2 (using the emission factor of the contracted electricity source — near-zero for RE PPA purchasers, or the grid factor if no RE contract exists). CBAM uses the actual emission factor of the electricity physically consumed at the facility — which corresponds most closely to the BRSR Core market-based Scope 2 calculation when physical RE delivery is verified, or to the location-based Scope 2 when only REC purchases (not physical RE) exist. An aluminium company that purchases RECs but not physical RE will show a lower market-based Scope 2 in BRSR Core but will use the grid GEF for CBAM embedded emission calculation — the BRSR and CBAM figures will diverge. Companies need to understand this distinction to avoid overstating their CBAM position based on BRSR market-based Scope 2 disclosures.
Sources
- SEBI — BRSR Framework notification and BRSR Core guidelines — 2021, 2023 updates
- SEBI — BRSR Core reasonable assurance requirements — guidance note for assurance providers
- GRI / ISSB — GHG Protocol alignment with Indian BRSR Core KPIs
- Bureau of Energy Efficiency — CCTS MRV methodology — compatibility with BRSR Core GHG data requirements
- European Commission — CSDDD — EU Corporate Sustainability Due Diligence Directive — supply chain emission disclosure implications for Indian suppliers
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